private async void ChangePushState(bool isOn)
{
IsPushStateChanging = true;
byte currentRetry = 0;
while (currentRetry < 4)
{
try
{
if (isOn)
{
await pushNotificationsService.RegisterDevice();
}
else
{
await pushNotificationsService.UnregisterDevice();
}
settingsService.Set(ENABLE_PUSH_NOTIFICATIONS, isOn);
break;
}
catch (Exception ex)
{
if (++currentRetry < 4)
{
int timeout = currentRetry * 5;
var notification = new AppNotification
{
Type = AppNotificationType.Warning,
Title = ex.Message,
Content = $"Повтор через {timeout} секунд",
Duration = TimeSpan.FromSeconds(timeout)
};
appNotificationsService.SendNotification(notification);
await Task.Delay(timeout * 1000);
}
else
{
settingsService.Set(ENABLE_PUSH_NOTIFICATIONS, !isOn);
var notification = new AppNotification
{
Type = AppNotificationType.Error,
Title = $"Не удалось {(isOn ? "включить" : "отключить")} Push-уведомления",
Content = "Возвращены предыдущие настройки"
};
appNotificationsService.SendNotification(notification);
}
}
}
IsPushStateChanging = false;
}